The ModelFest data set was created to provide a public source of data to test and calibrate
models of foveal spatial contrast detection. It consists of contrast thresholds for 43 foveal …

Despite an obvious demand for a variety of statistical tests adapted to classification images,
few have been proposed. We argue that two statistical tests based on random field theory …

How well do classification images characterize human observers' strategies in perceptual
tasks? We show mathematically that from the classification image of a noisy linear observer …

We used classification images (AJ Ahumada, Jr., & J. Lovell, 1971) to estimate the
perceptual filter in a task designed to assess both local and nonlocal effects upon contrast …

Human observers are more adept at classifying a face as, for example, male vs. female, or
happy vs. unhappy, than they are at individuating that face (itself a form of classification) …

Perceptual leaming is characterized by an improvement in a perceptual task following
practice. On the one hand, perceptual learning is known to be driven by low-level, bottom-up …

In this thesis, ideal observer analyses were developed to answer two basic questions
related to understanding biological motion perception. First, how are biological movements …